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New research carried out in the UK shows that having a Covid-19 vaccine offers as much as 75% protection against hospitalisation in older people and similar protection against infection transmitted by asymptomatic carriers. Andrew Hayward, Professor of Infectious Disease Epidemiology at University College London and a member of the UK government鈥檚 scientific advisory body SAGE explains the research findings and what the longterm defence against infection might look like. Photo: A health worker prepares an injection, London UK, February 2021 Credit: Reuters
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